The 'rad' is the correct unit used to report the measurement of (a) the ability of a beam of gamma ray photons to produce ions in a target (b) the energy delivered by radiation to a target (c) the biological effect of radiation (d) the rate of decay of radioactive source

Answer: (c). The rad is a unit of absorbed dose: 1 rad = 0.01 J/kg of energy absorbed by the target. Ionisation produced by gamma rays is measured in roentgen, biological effect in rem, and decay rate in curie or becquerel. So the rad measures the energy delivered by radiation to a target, option (b).

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Law of Radioactive Decay

The $\text{'}rad\text{'}$ is the correct unit used to report the measurement of

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Answer: (c)

The rad is a unit of absorbed dose: $1\text{ rad} = 0.01\text{ J/kg}$ of energy absorbed by the target.
Ionisation produced by gamma rays is measured in roentgen, biological effect in rem, and decay rate in curie or becquerel.
So the rad measures the energy delivered by radiation to a target, option (b).

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